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公开(公告)号：EP3057791B1
公开(公告)日：2018-07-11
申请号：EP14793682.7
申请日：2014-10-10
发明人： LAI, Chuan Yar , BRUNNER, Kurt , VAN DUN, Jozef J.I. , MAZZOLA, Nicolas C. , ARROYO VILLAN, Maria Isabel
IPC分类号： B32B7/02 , B32B7/12 , B32B27/08 , B32B27/32 , B32B27/34 , B32B27/36 , B32B27/40 , B32B27/06 , B32B27/30
CPC分类号： B65D65/02 , B32B7/02 , B32B7/12 , B32B27/065 , B32B27/08 , B32B27/304 , B32B27/306 , B32B27/32 , B32B27/325 , B32B27/327 , B32B27/34 , B32B27/36 , B32B2270/00 , B32B2274/00 , B32B2307/31 , B32B2307/582 , B32B2307/72 , B32B2439/46
摘要： The present disclosure is directed to compositions and film structures suitable for heat seal production. The heat scalable flexible film structure includes: a layer (A) comprising a blend comprising from 35 to 80 percent by weight of the layer (A) of a propylene based plastomer or elastomer ("PBPE") and from 20 to 65 percent by weight of the layer (A) of a low density polyethylene having a density in the range of from 0.915 g/cm 3 to 0.935 g/cm 3 , wherein the blend has a melt index (as determined according to ASTM D-1238 (at 190°C/2.16 Kg) a layer (B), adjacent to layer (A), comprising a polyolefin-based polymer, wherein the polymer or polymer blend which makes up layer (B) flows more easily than the blend of layer (A) under conditions intended for making a hard seal with the film structure; and an outermost layer (C) comprising a material having a melting point greater than 140°C; wherein the ratio of the thickness of layer (B) to the thickness of layer (A) is 3:1 or greater. The heat scalable flexible film structure is used to make a flexible container having one or more heat seals. The heat seal can be a frangible heat seal, a hard heat seal, or a combination of frangible heat seals and hard heat seals depending on the sealing conditions.
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公开(公告)号：EP3589488A1
公开(公告)日：2020-01-08
申请号：EP18710662.0
申请日：2018-02-27
发明人： KARJALA, Teresa P. , ORTEGA, Jose , KARDOS, Lori L. , GILLESPIE, David T. , NAUMOVITZ, John A. , LAI, Chuan Yar , POLK, Zachary L.
IPC分类号： B32B27/32
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公开(公告)号：EP3414271B1
公开(公告)日：2020-11-25
申请号：EP17704364.3
申请日：2017-01-25
发明人： PATEL, Rajen M. , DEGROOT, Jacquelyn A. , ARTEAGA LARIOS, Fabricio , BENSASON, Selim , KARJALA, Teresa P. , DEMIRORS, Mehmet , LAI, Chuan Yar
IPC分类号： C08F210/16 , C08J5/18 , C08L23/04
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公开(公告)号：EP3057791A1
公开(公告)日：2016-08-24
申请号：EP14793682.7
申请日：2014-10-10
发明人： LAI, Chuan Yar , BRUNNER, Kurt , VAN DUN, Jozef J.I. , MAZZOLA, Nicolas C. , ARROYO VILLAN, Maria Isabel
CPC分类号： B65D65/02 , B32B7/02 , B32B7/12 , B32B27/065 , B32B27/08 , B32B27/304 , B32B27/306 , B32B27/32 , B32B27/325 , B32B27/327 , B32B27/34 , B32B27/36 , B32B2270/00 , B32B2274/00 , B32B2307/31 , B32B2307/582 , B32B2307/72 , B32B2439/46
摘要： The present disclosure is directed to compositions and film structures suitable for heat seal production. The heat scalable flexible film structure includes: a layer (A) comprising a blend comprising from 35 to 80 percent by weight of the layer (A) of a propylene based plastomer or elastomer ("PBPE") and from 20 to 65 percent by weight of the layer (A) of a low density polyethylene having a density in the range of from 0.915 g/cm 3 to 0.935 g/cm 3 , wherein the blend has a melt index (as determined according to ASTM D-1238 (at 190°C/2.16 Kg) a layer (B), adjacent to layer (A), comprising a polyolefin-based polymer, wherein the polymer or polymer blend which makes up layer (B) flows more easily than the blend of layer (A) under conditions intended for making a hard seal with the film structure; and an outermost layer (C) comprising a material having a melting point greater than 140°C; wherein the ratio of the thickness of layer (B) to the thickness of layer (A) is 3:1 or greater. The heat scalable flexible film structure is used to make a flexible container having one or more heat seals. The heat seal can be a frangible heat seal, a hard heat seal, or a combination of frangible heat seals and hard heat seals depending on the sealing conditions.
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